Valve.



. E. FISHER;

VALVE.

APPLICATION FILED JUNE 29, I915.

Patented Feb. 20,1917.

I a. Z32 ve niorv \ll llll-li llllm illllIIIIllIllllll' i To all whom it may concern:

U ITED s'rA Es PATENT OFFICE.

EMANUEL FISHEB,,.OF PROVIDENCE, RHODE ISLAND.

VALVE specification of Letters Patent.

Patented Feb. 20, 1917.

Original ap'plic'etion'flled August as, 1912, Serial No. 717,455. Divided and this application filed June 29,

Be it known that I, EMANonnFIsnnn, a

citiaen of the United States, residing at Providence, in the county of Providence and State of Rhode Island ha'veinv ented.

certain new and useful Im rovements in valves,

of which the following is a specificati on; V

My invention is a division of my appl1- cation for valves, filed August 28, 1912,

S Bi'TNO'. 717,455; which has matured into "the valve and its seat; the prevention cally fit the valve and seat; and to attain ture.

these ends in a simple and inexpensive struc- To the recited ends essentially my invention consists in the construction and combination of parts which an 'withinthe scope or the appended claims.

the accompanying drawings which form a part of this specification,

Figure 1 is a vertical central section of my valveca-sing. and valve,

.Fig. '2, a side elevation partially in diametrical-section'of the valve member, and a.

similar section. of a portion of the adjacent f casing,

-.Fig, 3, a. similar partial elevation and section of the same showing a second valve face in engagement with. the valve seat;

Fig. 5, a partial elevation and section" Fig. 4?, section on line 4-4 of Fig. 2,

similar to Fig. 2 of a modified form, and

Fig. 6, a transverse central section of var'tother form ofiny valve seat.

"Fi is an elevation of a modified form Like reference characters indicate like parts throughout the views.

In the present mstance my invention is shown in conjunction with a valve casing stem is indicated the reference 'letterE, and 11"" the usual hreeds e to engage the of the valve. e

1915. Serial No. 36,982.

convenient manner. in the present instance the connection consists of a screw F pro vided with a squared head. I having an opening f, adapted to loosely receive the reduce "being provided with-an"ani11|lar' roove f to allow passage of a pin f" whicii is fixed in the head f. Thus the valve'slem is rotatable relatively to the screw F.

A cylindrical valve G hus'axiaily disposed threaded holes 9 and g in its ends to accommodate the screw F.

v The valve. is provided with two 2 faces, g. and 5 one on. each end valve. The face 5 has a circularre forming an annular inclosing wall h. centric with the recessh; but of less .uiamc ter, and openin out of said recess is; a second recess h %orming an annular inclos ing wall It. Thus are found a plurality of internal steps of successivel y lessdianie ter. Y

1 "The face g may be provided with a series of circular steps, one step. 7' only being end of the valve'stem, the latter shown inthe' present instance, but this,

with "the face 9 constitutes two acting faces. h

In Fig. -7 I have shown a valve with a plurality of concentric steps 7', j for cooperation with a plurality of concentric internal steps such as m, m seen in Fig. 6.

The partition I) is provided with a valve seat comprising external and internal stepped faces adapted to'coiiperate with the faces of the valve Gr In the present in stance the seat com rises an external zannular? elevated sh'ou der orstep k and a second annular external shoulder l thereon, of less'idiumeter than the shoulder In. Upon the interior of the-seat is. an annularshoulder' orstep m. T

equal, and the diameters of the cavity h and the shoulder Zfare also substantially diameters of the cavity h and the sliou der k are substantially.

equal.- "The depth of'the cavities h and h are ual to or moreflthan the heights of the 'shoul ers k and Z resmcti'vely.

. 'The diameter of the elevation" j is sub stuntially the same as that of the inner face fof thestep Z end is of the same deptlilor c yg eter a I.

The valve G is preferably initiall mountt After Wear of the coiiperating faces in j this position, the valveG may be reversed,

- and the screwgF be inserted in the hole 9'.

- constituting When so reversed the elevation j rests upon the up er face of the step m, and the side face 0 said elevation is adjacent the inner face oftheste Z, all-as shown in Fig. 3.

Ifdesiredt 'eside faces of the steps of the seat may-be beveled as at In andl and the side of the elevation j may be beveled as at 1''. "The walls of the cavities It and it may then be beveled as at h .and' it all as shown in Fig. 5. I The numberof outside and inside "steps the valve seat may be increased to any desirednumber. InFig. 6 is shown at m one additional inside seat to accomnodate one additional step j.

As the valve G slides ve ically in the valves-casing a guiding means is provided.

In the present instance it consists of a screw'R threaded iii an opening win the casing and projectinglo osely into a vertical slot g in'the side of the valve G.

The series of steps on the valve and valve seat aflord compensation means,'as.the faces successivel wear, to maintain a permanently effective .0 osure of the valve. The valve,

seriesal'so. serve to automatically square the valve, in its seat.

. I claim '1. In 'a device is the type at forth, the

p combination of a valve seat comprising a series ofconcentric external ste s, and a cy- I lindrical valve comp-rising a at operating end facepr'ov-ided integrally with aseries of concentric cavities adapted to "severally "centric external and internal steps a reversifhhdr ih valveprovided withintegral he? embrace" the steps withthe concentric faces of said steps and cavities inengagement with eachother, I i

, '2. In a device ofthe type setfoi-th, the

combination of-a valvev seat comprisingn plurality of" concentric internal 'steps,' a cylindrical; valve-provided with .an operating end face, and integral concentric steps 11 on said face adaptedto'i'e'gister with the rst i mentionedstepswith the concentric faces of the step'sfof saidrvalveiand seat in contact with each othen, 1

3. In a device 'jil theLty eset forth, the combination of a valve seat.comprising-conlile cylindrical valvecomprisin'g integral fiat operatingend faces, one of said, faces being provided with cavities adaptedo embrace the external steps, and a step the other face adapted toregister with oniof the-in ternal steps.

4. As anew article of manufacture; a cy operating faces, one of said faces being provided'integrally with concentric cavities of different i other face, said faces being also provided with threaded recesses, said valve being re iversible, whereby either end' may be used .with a step ed valve seat.

5. In a evice of the type set forth, the combination of a valve casing, a valve seat in the casing comprising concentric steps, a reversibly mounted cylindrical valve. slidably mounted in the casing,one end of said ameters, and a step upon=-the valve being provided with a cavity adapted I to coo erate with.one step, and a step upon the ot er end of the valve adapted to engage another step the opposite faces of said valve being provided with threaded apertures and .a valve stem removably engageable with either of said apertures.

said valve adapted to engage'another of the first mentioned steps whereby said valve may be used in reverse posit on, and a valve stem .inthe casing attached to one end of the valve.

7. In a deviceof the type set forth, the

' combination of a valve casing, a valve seat n the casing comprising concentricsteps, a

cylindrical valve slidably .mounted in the casing provided with a longitudinal slot in its side; one of the ends of the'valve being provided with a cavity comprising a' plurality of stepsintegral, with said valve. and

adapted to codperate with aportion of the steps uponthe seatava stem in the asing attached to the other end of the valve, saidother end of the valve having an integral concentric step adapted to engagefan other of'the 'ste s upon the seat whereby it y rev'ersib y u a d m mber-in the caslng extending into the slot.

combination'of a valve seat comprising con-v .adevice o'f-the type set forth, the s centric steps provided with beveledside faces and fiat (and faces, a'nda valve providedintegrally with concentric steps provided with inclined side faces and fiat end faces, the

. side faces of the va'lve seat beingarranged to coi'iperate with the. side. faces of the valve steps, and the flat faces of the valve seat be 'ingarranged to coiiperate with' the llatfaces" of the valve.

9. In a device'of the .v type'sctfortlu-the' combination of .a'valve casing having'a valve seat comprising an ext'ernal'annu'lar elevated. shoulder and a second annular external shoulder of less depth, and a valve having two acting faces one on each enfl thereof, one face having a recess forming an annular inclosing wall for one of said shoulders and an annular wall of less diameter for inelosing the other shoulder, said inclosin walls being at least equal to the heights 0 said shoul- (16138, said valve being reversible and the Valve seat having an interior annular shoulder adapted to cooperate with the other netin% face of the valve. I

n testimony whereof I have afiixed my signature.

EMANUEL FISHER. 

